Sodium Metabisulfite – Food & Industrial Grade Preservative

Jiangsu Khonor Chemicals Co., Limited supplies high-quality Sodium Metabisulfite (CAS 7681-57-4, Na₂S₂O₅), a versatile preservative, antioxidant, and reducing agent widely used in the food industry, water treatment, and various industrial applications. We offer bulk supply with customized packaging options.

? Detailed Introduction of Sodium Metabisulfite

✔ What is Sodium Metabisulfite?

Sodium Metabisulfite, also known as sodium pyrosulfite, is a white crystalline powder with a strong sulfur dioxide odor. It is widely used in the food, pharmaceutical, water treatment, and industrial sectors due to its strong antioxidant and preservative properties.

✔ CAS Number & Chemical Formula:

• CAS Number: 7681-57-4

• Chemical Formula: Na₂S₂O₅

• Molecular Weight: 190.1 g/mol

? Product Specifications

? Applications of Sodium Metabisulfite

✔ Food & Beverage Industry (E223)

• Used as a preservative and antioxidant in wine, fruit juices, dried fruits, and seafood.

• Prevents browning and oxidation in processed foods.

• Controls bacterial growth and extends shelf life.

✔ Water Treatment

• Acts as a chlorine remover in wastewater treatment.

• Used for dechlorination of drinking water before reverse osmosis.

• Helps in removing heavy metals from industrial wastewater.

✔ Industrial Applications

• Used as a bleaching agent in pulp, paper, and textile industries.

• Applied in leather processing for deliming and removing excess tannins.

• Used as a reducing agent in chemical industries.

✔ Pharmaceutical & Medical Applications

• Used in pharmaceutical formulations as an antioxidant.

• Added in some intravenous (IV) solutions for stability.

✔ Mining & Oil Drilling

• Applied in ore flotation and mineral processing.

• Used in oil drilling fluids to reduce viscosity and prevent oxidation.

? How Does Sodium Metabisulfite Work?

1. Preservative Action in Food:

• Releases sulfur dioxide (SO₂), which inhibits the growth of bacteria, mold, and yeast.

• Prevents oxidation of food, keeping colors and flavors intact.

2. Water Treatment & Dechlorination:

• Reacts with residual chlorine in water to neutralize it before reverse osmosis treatment.

3. Industrial Bleaching & Reducing Agent:

• Breaks down unwanted colorants in textiles, paper, and leather processing.

? Production Method & Raw Materials

✔ Raw Materials Used:

• Sodium carbonate (Na₂CO₃)

• Sulfur dioxide (SO₂)

• Water (H₂O)

✔ Production Process:

1. Absorption: Sulfur dioxide is absorbed into a sodium carbonate solution.

2. Crystallization: The solution is cooled to allow sodium metabisulfite crystals to form.

3. Filtration & Drying: The crystals are filtered, dried, and packaged.

? Famous Sodium Metabisulfite Brands Worldwide

• Solvay (Belgium)

• Aditya Birla Chemicals (India)

• BASF (Germany)

• Jiangsu Khonor Chemicals Co., Limited (China)

? Why Choose Jiangsu Khonor Chemicals Co., Limited?

✔ High-Purity Food & Industrial Grade Sodium Metabisulfite
✔ GMP & ISO-Certified Manufacturing
✔ Competitive Pricing & Bulk Supply
✔ Custom Packaging & Global Distribution

? Order High-Quality Sodium Metabisulfite from Jiangsu Khonor Chemicals Co., Limited!

Looking for a trusted Sodium Metabisulfite supplier? Jiangsu Khonor Chemicals Co., Limited provides bulk supply of premium-grade Sodium Metabisulfite for food, water treatment, and industrial applications.

? Contact us today for a free quote & sample!